Quantum cascade lasers (QCL) are the first room temperature semiconductor laser source
for the mid-IR spectral region, triggering substantial development for the advancement of …

Chemical imaging, especially mid-infrared spectroscopic microscopy, enables label-free
biomedical analyses while achieving expansive molecular sensitivity. However, its slow …

A photoacoustic module (PAM) for methane detection was developed by combining a novel
3.2 μm interband cascade light emitting device (ICLED) with a compact differential …

An ultra-highly sensitive and robust CH_4 sensor is reported based on a 3.3 µm interband
cascade laser (ICL) and a low-noise differential photoacoustic (PAS) cell. The ICL emission …

A compact ppb-level SO_2 photoacoustic sensor was developed for the application of SF_6
decomposition detection in electric power systems. The selection of the SO_2 target …

A ppb-level photoacoustic multicomponent gas sensor system for sulfur hexafluoride (SF_6)
decomposition detection was developed by the use of two near-infrared (NIR) diode lasers …

We demonstrated a novel trace gas sensing method based on fiber-ring laser intracavity
photoacoustic spectroscopy. This spectroscopic technique is a merging of photoacoustic …

In this paper, a two-component gas sensing system in the resonant cavity of the fiber ring
laser based on photoacoustic spectroscopy (PAS) is designed by embedding the PAS cell …

Advancement of discrete frequency infrared (DFIR) spectroscopic microscopes in image
quality and data throughput are critical to their use for analytical measurements. Here, we …

Mid-infrared (MIR) supercontinuum (SC) lasers are an attractive new option in the field of IR
spectroscopy, especially for standoff detection. Supercontinuum radiation unites high …